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TM-T20III Thermal Receipt Printer

The affordable TM-T20III thermal receipt printer is the perfect solution for retailers looking for reliable performance and the flexibility to support existing POS and mPOS systems. Choose from the Serial, Parallel, wireless or Ethernet model. The Ethernet model makes it easy to print from smart devices with mPOS/tablet POS functionality. With speeds up to 250 mm/second and options to reduce paper usage, the TM-T20III is the smart choice for retailers looking for a fast, efficient POS solution. A reliable performer you can count on, it offers a 150 km printhead1 and an auto-cutter life of 1.5 million cuts1.


  • Affordable – thermal printer designed with the reliability and flexibility that retailers need
  • mPOS/tablet support – Epson ePOS SDK (iOS®/Android™) support on the Ethernet model; DHCP is enabled and automatically retrieves the printer IP address
  • Fast print speeds – up to 250 mm/sec
  • Enhanced print options – reduce paper usage up to 30 percent
  • Reliable printhead – 150 km/150 million pulses1
  • Auto-cutter life – 1.5 million cuts1
  • Comprehensive service and support – dedicated technical resource team and customized solutions

Part Number(s):

  • C31CH51001 – TM-T20III-001;PTR,UB-S01,USB,PS,ES;EBCK
  • C31CH51A9972 – TM-T20III-002;ETN;CAT5;PS;ES;EBCK
  • C31CH51A9981 – TM-T20III-001;PO2II,PS,AC;EBCK
  • C31CH51A9991 – TM-T20III-002;USB;ETN;PS;WL06;EBCK

Detailed Specifications

Print Other

Printing Technology:
Thermal line printing
Print Speed:
Max. 250 mm/sec (9.84″/sec)


5.51″ x 7.83″ x 5.75″ (140 mm x 199 mm x 146 mm) (W x D x H)
3.75lb (1.7 kg)
Safety Approvals:
EMI Standards: FCC/ICES-003 Class A/NMB-3 (A)
Safety Standards: UL60950-1/CSA C22.2 No.60950-1
Case Color:
Epson Black

Print Fonts

Column Capacity:
Paper width 80 mm: 48/64 columns
Paper width 58 mm: 35/46 columns
42-column Mode:
Paper width 80 mm: 42/60 columns
Paper width 58 mm: 42/31 columns
Character Size (W x H) 0.08 x 2.13
Character Size:
0.08 x 2.13 mm and 1.25 x 3.00 mm
9 x 17 and 12 x 24 dots/character (W x H)
Character Set:
95 Alphanumeric, 18 International, 128 x 43 Graphic
Characters per Inch:
22.6 and 16.9 cpi
UPC-A/E, JAN 13 (EAN 13), JAN 8 (EAN), Code 39/93/128, CODABAR (NW-7) QR-CODE, MaxiCode, PDF417, Composite Symbology, GS1-128, GS1 DataBar, 2DGS1 DataBar, ITF, Datamatrix, Aztec

Media Handling

Media Dimensions:
80 mm: 79.5 ± 0.5 x 83 mm
3.13″ ± 0.02″ (width) x 3.27″ (roll diameter)
58 mm: 57.5 ± 0.5 x 83 mm
2.26″ ± 0.02″ (width) x 3.27″ (roll diameter)
Thickness 48 – 80 μm


Standard Connectivity:
Built-in USB + Serial Interface
Built-in USB + Parallel Interface
Ethernet Interface
Wireless Interface (Ethernet + OT-WL06); 802.11 b/g/n/ac (Wi-Fi® 5GHz) Dual Band
Printing from a Mobile Device:
Supported (mobile) operating systems: Wireless (802.11), iOS, Android and Windows® operating systems
Epson ePOS Technology: Supports ePOS service for direct printing from mobile devices or web-based applications

POS Details

MTBF: 360,000 hours1
MCBF: 60,000,000 lines1
Auto cutter: 1.5 million cuts1
2 drivers
Software Included:
Drivers and tool software for PC POS (APD, OPOS™, JavaPOS™, OPOS NET™)
TM Virtual port driver
Linux® Cups driver
TM-T20III utility
Deployment tool
Monitoring tool
Epson Net Config (Windows, Mac®)
External buzzer unit (0T-BZ20)
Horizontal/vertical on counter/vertical on wall with wall hanging bracket


Power Supply Voltage:
24 VDC ± 7%
Power Consumption:
Operating: Approx. 29.5 W
Standby: Approx. 0.80 W
Power Source:
100 24 VDC ± 7%, 50/60 Hz, External (AC cable included)